Answer :

Final answer:

Light travels in a vacuum at a constant speed, known as the speed of light, equal to 299,792,458 m/s or rounded to about 186,000 miles per second.

Explanation:

In a vacuum, light waves travel at a constant speed, which is one of the fundamental physical constants. This speed of light is represented by the symbol c and is precisely equal to 299,792,458 meters per second (m/s). For practical purposes, this is usually rounded off to 3.00 × 108 m/s. When converted into miles per hour, this value is approximately 671 million mph, or about 186,000 miles per second (mi/s). Therefore, the accurate rate at which light travels in a vacuum is closest to 186,000 miles per second, which corresponds to answer choice 'A' 186,000 mph.

Thanks for taking the time to read In a vacuum light waves travel at a rate of about A 186 000 mph B 186 000 mpm C 18 600 mph D 186. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada